Apparatus for distributing liquids by rotary spindles



June 22 1926.

M. BHRKHGT APPARATUS FOR DISTRIBUTING LIQUIDS BY ROTARY SPINDLES Filed$epi 19. 1921 far Patented June 22, 1926.

UNITED STATES 1,590,073 PATENT OFFICE.

MARC BIRKIGT, OF BOIS COLOMBES, FRANCE.

APPARATUS FOR DISTRIBUTING LIQUIDS BY RQTARY SPINDLES.

Application filed September 19, 1921, Serial No. 501,854, and in BelgiumOctober 21, 1920.

The invention relates to a device for distributing liquids by means ofrotating shafts, in which the liquid admission is divided into twochannels. The invention is more particularly applicable to thelubrication of internal combustion engines.

7 The invention comprises rotating a shaft having a large bore and acentrally arranged tube coaxial with the bore in the rotating shaftwhich is provided at the point of admission of the lubricatingoil withtwo series of oblique oil admission passages which open into differenttransverse planes in the bore, while a ring closely fitted over thecentral tube and closely fitting within the large bore, separatestheoutlets of the first series of passages from the outlets of thesecond series of passages so that the first series of passages feed theannular space between the large bore and the central tube and the secondseries of passages feed independently therefrom the central tube.Consequently the lubrication delivery openings which, connected with thecentral tube, are furthest away from the oil feeding point are providedwith lubricating mate rial separately and independently from the neareropenings which are connected with the large bore.

The invention is more particularly described with reference to theaccompanying drawings, in which:

Fig. 1 shows a part section of an internal combustion engine embodyingthe invention, said section being taken substantially through the axisof the cam shaft of the engine.

Fig. 2 shows the said cam shaft rotated through Referring to thedrawings the valves 1 are arranged in a straight line parallel with thecrank shaft of the engine (not shown), and the cams 2 which control thevalves are carried by the shaft 3 which is also arranged with its axisparallel to the said crank shaft.

The mechanism for driving the cam shaft comprises a pair of bevelpinions 4 and 5 mounted, respectively, on one end of the said cam shaft3, and on the corresponding end of a vertical shaft 6.

The parts of the engine, for instance, the front and rear bearings 7 and8 of the cam shaft, the intermediate bearing 9, the cams and valves, aswell as the said vertical shaft 6, are lubricated by means of an axialbore 10 formed in the shaft3 and having radial holes 11 located alongthe cam shaft and communicating with said bore. A. pump or othersuitable device forces the lubricant at a suitable pressure into theaxial bore through a conduit 18 formed in the front end bearing 7.

The cam shaft 3 is so constructed that its axial conduit is of acomparatively large diameter except at the end which is mounted in therear bearing 8. The shaft 3 has also its front end tapped in, to receivea plug 12, preferably held therein by a screw connection. cam shaftwhich rests in the rear bearing is considerably reduced in diameter ascompared with the bore 10 and is preferably coaxial with said bore 10. y

Inside the shaft 3 is arranged a central tube 13, the outside diameterof which is equal to the inside diameter of the bore of reduced diameterin the shaft 3. The central tube 13 is of such a length that, after ithas been mounted with its rear end i in the bore of reduced diameter inthe rear part of the shaft 3, the plug 12 bears against its front edge;7

The shaft 3 is provided at its front end. w1th two sets or series ofoblique oil ad- 'mission passages 14 and 15, the inner orifices of thebores 14 opening in a different transverse plan from the inner orificesof V I the bores 15, the first series being inclined towards the frontend of the shaft and the otherseries being inclined in the opposite'directlon.

A series of notches 16 is formed in the front end of the bore 10, thesenotches formingpassageways between the bore of the. shaft and the tube13. A washer 17 embracing the tube 13 is placed tightly on the frontpart of the axial bore 10 of the shaft 3 so that, when the said tube isin place, a tight joint is formed between the inner wall of the axialbore 10 and the exterior of the tube 13. This washer is so arranged thatit The bore of that portion of the h separates the outlets of thepassages 14 and the outlets of the passages 15. Said passages 14 and 15are thus so arranged so that 1 they are in communication with theconduit 18 and preferably extend at an angle to each other. Thus, whenthe engine is running, a division of the lubricant takes place at thepoint where the lubricant escapes from the conduit 18, and it passesinto two streams, one of which traverses the passage let incommunication with the tube 13 and easily reaches the rear end of theshaft 3, and

the other of which traverses the assa es 15 1D and. passes into thecomparatively narrow annular space formed by the outer wall of thecentral tube 13 and the inner wall of the .bore 10 of the cam shaft, sothat the oil the construction described, but comprises any modificationswhich are within the scope of the claims.

What is claimed as new is:

l. A device of the character described, comprising a shaft mounted inbearings and having a central bore provided with an opening at one endand a smaller bore coaxial with and prolonging said first-named bore atthe opposite end of the latter, the end of said shaft having saidsmaller bore extending within one of the end bearings, a central tubeextending lengthwise of the said larger bore coaxially with the latterand communicating with said smaller bore, a plug closing the open end ofthe larger bore, a washer tightly fitting between said larger bore andthe exterior of said central tube and dividing the annular space betweensaid larger bore and the central tube into a long annular space and ashorter annular space, said shorter annular space having communi cationwith said central tube, the wall of said shaft having feedingpassageways communieating on one side ofthe said washer with saidshorter annular space and ,on the other side of said washerwith saidlonger annular-space, said shaft also having radiallubricant-distributing openings through'the walls 'of its parts oflarger and smaller bore.

2. In a device of the character described, a shaft mounted in aplurality of bearings and having coaxial channels extendinglongitudinally thereof, including a central channel and an outerchannel, the central channel extending substantially from one end ofsaid shaft to the other end and the outerchannel being divided into twoparts,

one of said parts communicating with the 3. In a device of the characterdescribed,-

a shaft mounted in a plurality of bearings, said shaft having concentricchannels co axial therewith and also having passageways leading fromeach of said channels to separatebearinga'and means for dis-' tributingoil .independently to said channels.

4. A device of the character described,

comprising a shaft mounted in bearings,

said shaft having acentral bore provided with an opening in one end andalso having a smaller bore coaxial with and prolonging said first-namedbore, removable means for closing the end opening of said first-namedbore, a tube of smaller diameter than said first-named bore extendinglongitudinally of the latter and fitting the end of the'smaller bore,said tube segregating the smaller bore from the annular spacesurrounding said tube, means for supplying oil from one of the bearingsto said central tube and to. said annular space adjacent oneend thereof,means for distributing oil from said annular space to the bearingsadjacent said su ply means, and means. for distributing oil rom saidsmaller bore to the bearings remote from said supply means.v

In testimony whereof I have signed my name to this specification.

MARC BIRK'IGT.

